My new tower garden (2 weeks) had brown algae growing throughout. I researched and found out that I was letting light in through open net pots. I took the garden apart, cleaned it, and then filled all the net pots. It is now almost 2 weeks later and I can smell the algae again in the bottom reservoir! What do I do to stop this from happening? The ph level is correct.

Hi karie333, To mitigate algae growth, make sure you keep light out of the TG internals. Keep tub access port cover securely in place at all times, keep the tower top cover in place at all times and cover all unused growing ports. For existing algae, treat with Citricidal (Max Strength) Grapefruit Seed Extract (GSE): https://www.amazon.com/Maximum-GSE-Liquid-Concentrate-oz/dp/B001JD8X7E/ -- GSE application: Add 2 drops per gallon every time you add water+nutrients until you see a noted improvement... then stop. Resume treatment if the condition reoccurs. Add 40 drops of GSE for a full TG tub.